Electric governor.



B. 0. HOLM-HANSEN.

ELECTRIC GOVERNOR.

APPLICATION FILED Aucw, I915- 1,263,413. Patented Apr. 1918.

. specification.

This invention relates to an apparatus for UNITED STATES PATENT OFFICE.

ELECTRIC Specification 0t Letters Patent.

GOVERNOR.

Patented Apr. 23, 1918.

Application filed August 9, 1915. Serial 110.44.475.

To all whom it may concern:

Be it known that I, Biucnn ()TIAR HOLM- HANSEN, a subject of the King of Norway, residing at Christiania, Norwa have invented certain new and useful Improvements in Electric Governors; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the samc reference being. bad to the accompanying drawings, and to letters or figures of reference marked thereon, which form a partio'f this automatic regulation as .well in continuone current as in alternate current electric The object ofrthe' invention 1s to provide an automatic governor, in which variations in the circuit to be controlled diIBGZflY or m-' directly produce variations in a magnetic field, whereby inaccordance with these Vii Ii. ations electriccircuits are closed and opened, which automatically efi'ectadjustment ofthe potential or current in sired. value. 4 v i l A further object is to provide means toso control the tension that'the same is caused combination such as illustrated in the a nenexed drawing, which shows an. embodiment of the invention. 1 I

Figures- 1 and 2 show diagrammatically the part of the governonwhich contains the variable magnetic current and the electric contact devices 0 erated by Same. i

Fig. 3 shows the means for operating the usual regulator arm or the like by means of devices actuated by the electric currents closed by the said electric contact devices.

Fig. 4 shows an embodiment of a diagram of connections for the automatic tension overnor coupled upon a plant for triphase i h tension alternating current.

n Fig. 1 the iron core 1 which is provided with a tension coil is fed directly or indirectly with current from the electric source of energy whose tension is to be controlled.

' Movable in a recess in the iron is the arms- 'ture 3 whose position is controlled by the question to the de-" in a desired manner, when the contric current flowing through the tension 1 coi 2.

To the armature 3is secured a lever sliding on contact paths 6 and'7. One of the latter is sectioned in two parts insu-- lated from each other by an insulating piece 18 so that the current will be interrupted when said arm 5, which is rovidedwith a sliding contact connecting tie. contact paths ,65 y "(i and-'7 with each other, has p ssed this insulated point.

The contact paths are secured to and insulated from :rsupport- 8 carried by a lever .i 25 which is mechanically connectedlwith 2111711 1 armature .9 movable in a recess in,.the,ir 0 n core 10. Thisiron coreis surrounded by ai current coil 11 connected .directlynor indiri. rectly with the electric sourcewofienergyh Q5. 1... whosctension is to be controlleduw Both of M the cores, 1 and 2, are laminatcdQhbllow rectangles, onccorner being cut tflway'tol're n ceive the respective laminated, 'spi'ing-re-f tracted, sector-shaped armaturcs 3: and; 9 This-arrangement permits a constantmag netic resistance through an air-gap of c.on-' stant width betweenthe horizontalflhub oi}. f. thecore and the armature, and agv'ariablej magnetic resistance through a variable air gap between the vertical limbiofthecorm and the armature. 1'. 1 {15.

Theposition of..thc a1'mature 9 isl cbri w: trolled by a, spring similar'totthe spring} and by the attraction pnodticdbtween. t e; core and the armature by the electric current Q61, passing throu h the current coil 11. i l

, Thefabove evice which is designed tobe l l m, assembled .into one "apparatus: and inclo sed in 1 e casing, forms the. tension oveinqr proper which operates thec'utting in'.of.the. ,9'5,,l electric clutches shown in Fig; 3.

To the device controlling either directly or indirectly the main tension of the plant is'secured a shaft 13. When this shaft is moved to and fro the tension will increase or decrease. This motion is transmitted from a small working motor 14 through a worm gear 24- by means of an electric coupling comprising a driving gear 15 which actuates the conical gears 16 and 17. To these gears are secured respectively electromagnets 21 and 22 fed through the slidin rings 19. These magnets are loose with t eir wheelson the shaft 13 and on the latter is keyed an armature 23. V

The small driving motor 14 is here designed to be connected with the tension of the magnetizing machine 36 from which the electric clutches are likewise fed. The magnetizing machine has a field winding 39.

The mode of operation of the above apparatus is as follows:

When the generator 37, having a field winding 40, has been brought up to normal working speed and approximately normal tension of the machine has been attained, the working motor 14 is cut in. The same will then rotate and carry along the loose gears 16 and 17. If the tension of the enerator is now insuflicient the lever 5 which is secured to the armature 3 (Fig.1) will take such a position on the contact paths 6 and 7 as to cut in the electric magnet 21, whereby the armature of the latter will be attracted and the working motion of the motor transmitted through this coupling to the governing apparatus whereby the tension is increased. When the tension has attained the proper amount the lever 5 will take such a position on the contact path as to interrupt the current owing to its making contact with the, insulating piece 18. The electromagnet 21 will therefore cease to attract its armature and the latter will stop whereby the shaft 13 will cease to rotate and the contact lever will receive no motion from the shunt regulator and the tension will consequently remain constant. If the tension should increase beyond the normal value, the electric clutch 22 will in like manner be cut in and remain connected until the proper tension has been attained. The tension .coil 2 is here designed to be connected to atension trans former 41.

If the tension is not only to be kept constant but also to be regulated according to the consumption current there ma be out in a current transformer 38 (Fig. 4 to feed the current coil 11. When the current increases, the armature 9 will move in such a manner that the support 8 of the contact path be displaced upwardly, thereby mcreasmg the tension of the generators in the other order to enable the lever 5 to take its neutral position on the insulating piece.

The above invention may be used as tension governor, as current governor or as a governor controlling in accordance both with current and with tension.

I claim 1. In apparatus of the character described, a pair of adjacent electromagnets' each comprising a winding, a core whose poles are at an angle to one another and have arcuate faces, a yieldingly supported armature havin an arcuate face for cooperation with said p0 e faces and pivoted with relation to said poles to maintain an air gap of constant width with respect to one of said poles and an air gap of variable width with respect to the other pole, and a circuit closing member carried by the armature, the circuit closing member of one of said armatures being roximate to and coiiperating with the mQtner of the other armature.

2. In apparatus of the character described, a'pair of adjacent electromagnets each comprising a winding, a core whose oles are at an angle to one another and having arouate faces, a yieldingly supported armature having an 'arcuate face for cooperation with said pole faces and pivoted with relation to said oles to maintain an air gap of constant width with respect to one of said poles and an air gap of variable width with respect to the other pole, and a circuit closing member carried by the armature, the circuit closing member of one of said armatures being proximate to and cooperating with the member of the other armature, one of said magnets being responsive to variations of voltage and onsiv'e to variations of current. In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses. I

' BIRGER OTI'AR HUM-HANSEN. Witnesses:

M. E. Gun-moans, Tns. Baas. 

